What is the interpretation of seeing a bright white light emanating from the body during sleep and from a Quranic image, and the repeated sighting of light in dreams, coupled with strong faith and adherence to acts of worship?

It is not possible to be certain about visible light, but if the beholder is righteous, then it is hoped that this is a sign of good and an honor from Allah, and an incentive for more obedience. One must be cautious of conceit so that Satan does not lead one into evil. And the greatest honor is adherence to righteousness.